The Chicago Bulls and Toronto Raptors have engaged in exploratory trade discussions on a potential deal centered around Carlos Boozer and Andrea Bargnani, according to sources.If talks proceed to a more serious level, smaller contracts will need to be added to the deal to make the salary cap aspect work.Still, both the Bulls and Raptors have given consideration to the move, sources said.For the Raptors, the question is whether the organization can afford having both Rudy Gay and Boozer on the payroll moving forward.The Bulls have long been assumed to be leaning toward using their amnesty clause on Boozer at season's end.Via Marc Stein/ESPN